package com.hmdp.service.impl;

import cn.hutool.json.JSONUtil;
import com.hmdp.entity.ShopType;
import com.hmdp.mapper.ShopTypeMapper;
import com.hmdp.service.IShopTypeService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hmdp.utils.RedisConstants;
import org.springframework.data.redis.core.RedisOperations;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.List;
import java.util.stream.Collectors;

import static com.hmdp.utils.RedisConstants.CACHE_SHOP_TYPE_KEY;

/**
 * <p>
 *  服务实现类
 * </p>
 *
 * @author 虎哥
 * @since 2021-12-22
 */
@Service
public class ShopTypeServiceImpl extends ServiceImpl<ShopTypeMapper, ShopType> implements IShopTypeService {
    @Resource
    private StringRedisTemplate stringRedisTemplate;
    @Override
    public List<ShopType> queryList() {
        List<String> range = stringRedisTemplate.opsForList().range(CACHE_SHOP_TYPE_KEY, 0, -1);
        if(range!=null && range.size()>0)
            return range.stream().map(shopType -> JSONUtil.toBean(shopType, ShopType.class)).collect(Collectors.toList());
        List<ShopType> list = list();
        if(list!=null && list.size()>0)
        {
            stringRedisTemplate.opsForList().leftPushAll(CACHE_SHOP_TYPE_KEY,list.stream().map(shopType -> JSONUtil.toJsonStr(shopType)).collect(Collectors.toList()));
            return list;
        }
        return null;
    }
}
